Stake for road strips



Oct- 26 1926.

Filed Feb. 8, 1926 Patented Get. 26, 1926.

UMTED stares raraur caries.

WILLIAM E. WHITE, OF CHICAGO, ILLINOIS, ASSIGNOR TO KALMAN STEEL COMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

\ STAKE FOR ROAD STRIPS.

Application filed February 8, 1926. Serial No. 86,832.

My invention relates to concrete or other monolithic road construction, and particularly to a stake or pin adapted for use in connection with the parting strip used in such roadways.

An object of my invention is to provide a stake that may be very simply constructed, easily driven and having a head that functions as a stop for limiting thedownward movement and as a driving surface to prevent battering and mis-shaping of the pin.

The use of pins of the general-character described is common, such pins being either of solid round form or of sheet metal bent into semi-circular form and tapered from end to end.

An object of my invention is to provide a pin that may be economically constructed of light-weight metal and provided with a head formed as a part of the pin.

The invention will be more readily understood by reference to the accompanying drawing, in which;

Fig. 1 is a side view of a pin constructed in accordance with my invention;

Fig. 2 is an edge view thereof;

Fig. 3 is a plan view thereof;

Fig. 4 is an elevation of the blank from which the pin is formed;

Fig. 5 is a side elevation showing the method of use of the pin, and

Fig. 6 is a sectional end view thereof.

In use, the stakes of my invention are intended to be driven into the soil through the apertures, 10, in the channel portion, 11, of the road strip, 12. In practice the stakes are driven into the ground until their upper ends are a substantial distance below the tops of the strips, and to avoid driving the stakes too far and thereby causing disengagement from the strips, I have provided the improvement shown herein. A further object in the use of a headed stake is to prevent the upward creeping or movement of the strip during the tamping of the concrete. These strips are commonly constructed with a channel or groove and the movement of the plastic material into and beneath the channel tends to cause the strip to raise and to become disengaged from the pm.

In manufacture.v the blank, 13, is formed as shown in Fig. 4, the upper end having a semi-circular disc portion, 14, joined by a neck, 15. to the body of the blank. The sides of the blank are parallel except at the lower end where the material is cut away to form a point. as at 16. Thereafter the blank is placed under a die and formed into arcuate cross section, as best shown in dotted lines in Fig. 3, the sides being parallel except at the extreme lower end. After the stake has been shaped or during the shaping operation. the disc 14, is bent downward to form a driving cap, the margins, 17, of which project beyond the outer limits of the curved portion of the stake and act as a stop, the lateral extent of the margins, 17 being greater than the size of the holes, 10, in the road strips.

Stakes of 'arcuate form but tapered from end to end are known and in use, such stakes being without heads. The holding effect of the stakes against vertical displacement of the strip is the frictional resistance secured by driving the stake into the holes provided therefor in the strips. Inasmuch as the stakes must be compressed toward the end of the downward travel of the pin, the

engagement with the strip is pronounced and there is a tendency for the strips to be displaced during the driving action. By providing a stake of uniform cross section and relying on the head for the holding engagement with the strip, this difficulty is avoided.

The invention is capable of some modification and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. A sheet metal pin adapted for use with a channel road strip having registering apertures in the channel, said pin being of generally arcuate cross section, and having a head that is of greater transverse extent than the pin, said head being permanently connected to the pin, the pin and apertures in the strip being proportionedto permit the pin to pass freely through the apertures without material friction.

2. A driving stake for securing road strips, consisting of a length of sheet metal,

bent into arcuate form, and ahead-overlying the upper end of the stake and pro- Vided with flanges extending outside of the limits of the stake.

3. A stake for road strips consisting of .a section of sheet metal bent into arcuate form and having an integral sem1-c1rcular dlSC overlying the margins of the upper end of the stake, the disc extending outside of the In testimon signature.

WILLIAM E. WHITE. 

